Maxim 300blk 115gr Tui Sba 20/500

The Maxim 300 Blackout 115-grain TUI SBA ammunition represents a purpose-built cartridge designed for short-barrel rifles where standard velocity loads fall short of optimal terminal performance. Developed through a partnership between Maxim Defense Industries and Fort Scott Munitions, this load addresses the specific ballistic challenges operators face when running sub-16-inch barrels in the .300 Blackout caliber.

The 115-grain projectile weight is optimized for velocity recovery in short-barrel platforms while maintaining the rifle's subsonic potential for sound suppression when needed. The TUI (Tumble Upon Impact) technology engineered into this round generates consistent wound cavities that exceed both expanding and fragmenting projectile standards, delivering superior terminal ballistics within the velocity envelope typical of short-barrel rifles. This means more reliable energy transfer and predictable performance at distances where SBR shooters actually operate—inside 150 yards where close-quarter rifle work occurs. The ammunition arrives in 20-round boxes, with 500 rounds per case for high-volume operators and training environments.

This load is engineered for defensive and duty applications where short-barrel platform adoption has become standard in confined environments—vehicle operations, building entries, and portable rapid-deployment scenarios. Law enforcement agencies and military units operating short-barreled carbines benefit from ammunition specifically tuned to their hardware rather than forcing general-purpose loads into specialized platforms. The round's design trades traditional velocity for terminal consistency, ensuring that SBR users no longer accept ballistic compromises.

The .300 Blackout platform's flexibility—seamlessly transitioning between subsonic and supersonic loads, suppressed and unsuppressed operation—relies on ammunition makers who understand platform-specific demands. Maxim Defense's ammunition line acknowledges that not all .300 BLK rounds perform equally across all barrel lengths, and this load explicitly closes the performance gap short barrels face.